Joint.



l. E. ANDREWS.

JOINT.

APPLICAHON FILED MAR. I. 1917.

1 ,279,072. Patented Sept. 17, 1918 2 SHEETS-SHEET JiOINT.

APPLlCATlON FILED MAR. I. I911.

'Patented Sept. 17, 1918.

2 SHEETS-SHEET 2- lave/Z252? M M ,modification.

JEROME EDSON ANDREWS, OF CHICAGO, ILL

IN 018, ASSIGN OR TO SIGN ODE SYSTEM, INC.,

OF CHICAGO, ILLINOIS, A CORPORATION OF DELAWARE.

JOINT.

Specification of Application filed March 1,

To all whom it may concern.

Be it known that I, JEROME. EnsoN ANDnEws, a citizen of the United States, and residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Joints, of which the following is a specification.

This invention relates to joints for box strapping or th like, and particularly to a simple, inexpensive, convenient and secure 'oint.

J It is an object of the invention to provide a joint which may be applied to overlapping strap ends from the side; which may be secured thereupon without the use of special tools if desired, and which is adapted to secure the joint by a multiplicity of interlocking crimps. It is a further object of the invention to provide a joint which is simple and economic to construct and apply.

In the drawings Figure 1 is an elevation of the clamping element forming a part of the joint of my invention, in the process of its formation.

Fig. 2 is a view of the clamping element, in one of its forms, ready for application on overlapped strap ends to form a joint.

Fig. 3 is a perspective view showing my improved joint.

Fig. 4 is a cross sectional view thereof.

Fig. 5 is an elevation of a modification thereof.

Fig. 6 is a perspective View of a further Fig. 7 is a cross sectional view of the modification shown in Fig. 6.

Figs. 8, 9, and lOare elevation, perspective and cross sectional view of another modification of the invention. 7

Figs. 11, 12, and 13 are an elevation, perspective and cross sectional view of another modification of the invention.

The joint of my invention is made by overlapping two strap ends and securing- "them by interlocking indentations formed and maintained by a clamping element which also assists in preventing the overlapped strap ends from sliding transversely upon each other. In making the clamping element, I form a zig-zag wire clamp such as illustrated in Fig. l, and subsequently fold Letters Patent. Patented Sept. 17, 19 18.

1917. Serial No. 151,664.

the clamp so formed upon its medial line so as to make the open sided device shown in perspectivein Fig. 2, comprising a clamping element of V form in cross section, the side planes of which are defined by the loops 1 and 2 and ends 1 and 2' of the clamp. This clamping element can be slipped sidewise 011 overlapped strap ends as will be immediately apparent, the loops and ends 1, 1 going upon one face of the overlapped strap ends, and the loops and ends 2, 2 upon the other face thereof. After this the clamping element is crushed or pressed in any desired manner, with the result illustrated in perspective in Fig. 3. The loops and ends 1, l, and 2, 2, respectively, will crimp the overlapped strap ends, forming a series of interlocking inden tations in the opposite faces of the strap ends, which will firmly lock the joint and prevent the straps from pulling apart, either lengthwise or sidewise.

In the modification shown in ends of the loops 1 and 2 are bent alternately across the normal plane of the strap from opposite directions, which prevents the sidewise (llSPlELCGHlQIIt of the clamp in so far as this is not prevented by the inclination of the indentations.

This joint may be made without any special tool, though a suitably designed tool for making it would probably be preferable. This novel feature which is of great importance is due to the fact that the clamping element in its collapse or deformation, does the crimping in the strap as well as subsequently assisting to maintain it, and therefore special appliances, which are often expensive and which are necessary to crimp the strap may, if desired, be obviated.

In the drawings, various modifications of the central idea above described have been shown, primarily dependent upon a difi'erent predetermined formation and proportion of the original zig-zag blank or upon different treatments thereof, or both. Thus in Fig. 5

have formed the clamping element so as to provide upon one side/0f the strap a series of pairs of closely adjacent legs 3 and on the other side legs a spanning the legs 3. This construction might be preferred to that shown in Fig. 3 because of the fact that the Fig. 3, the

' tending if than -body crimping,

two legs 4: will crimp the wire and clamp it directly over the two legs 3, and will form a crimp at right angles to the strap length, ex-

desired, all the way across the strap ends instead of a crimp which more or less scallops one edge of the strap, such as shown in Fig. 3.

In Fig. 6 another modification of this crimp is shown, in which the legs 4, corresponding to the legs 4, have been given an indentation 5 by means of a roller or the like, so as to crimp the strap transversely, and also to make a series of longitudinally arranged indentations, extending only partially across the strap ends, which serve to lock the ends against relative sidewise displacement.

In Figs. 8 and 9 another modification of the invention isshown, in which the loops 1 are closed adjacent their ends and bent over the face of the strap and down upon the other side, the loops 2* being similarly treated, the whole being compressed into the metal of the strap as in the other 1nodi1ica tions. In this construction the strap may be edgewise crimped as much as desired, as 1n-.

dicated at 7 in Fig. 9, in which is shown the edge of the overlapped strap ends being crimped or bent back in opposite direction by loops 2* and 1. This construction may combine edgewise crimping, which is easier crimping, if desired, edgewise crimping.

In Fig. 11 a more expanded modification of the invention is disclosed, in which the original legs 8 and 9 are individually pressed into the metal of the strap so as to make a series of distinct grooves or indentations to correspond to individual wire lengths. These have been indicated by 8 and 9, thus affording a series of inclined, small, transverse indentations into the metal of the strap, which are inclined to each other to prevent the removal of the overlapped strap ends from the wire or the displacement of the former sidewise, and which will serve to lock the joints tighter under increased tension.

Various other modifications of the invention are obviously possible, an almost infinite variety of configuration and design in which the clamping element shown in Fig. 2 can be made, and since the crimping of the strap ends may be effected by the body of the clamping element, numerous variations in the crimping effect can be produced with little or no difierence in the crushing tool applied, so asto produce various forms of interlocking crimping.

The subjectmatter of this invention is advantageous over sleeve elements through which the overlapped strap ends must be threaded, which is a tiresome and tedious operation, the corresponding element of this or may employ only ends,

being provided with portions with transverse body I projections because there is sisting box strapping,

' emma invention being capable of being slipped sidewise over the overlapped strap ends. The further fact that the body of the clamping element will perform the crimping operation under pressure is another important advantage inherent in the invention.

Having now described my invention, 1 claim 1. A joint for metallic box strapping or the like, comprising overlappedflat strap a clamping element comprising a zigzag wire folded longitudinally, applied upon the overlapped strap ends, and having the loops of wire thereafter pressed into the metal of the overlapped ends in opposite directions and at right angles to the plane of contact of the strap ends so as to bend the overlapped ends into interlocking crimped relation.

2. A joint for box strapping or the like, comprising overlapped strap ends, a clamping element applied after are overlapped upon each other and subjected to heavy pressure, said sleeve element adapted to indent the metal of the overlapped strap ends under pressure into mutually interlocking deformation, whereby the sleeve element and the overlapped strap ends are simultaneously crimped to afford a tension resisting oint.

3.'A joint for metallic box strapping or the like, comprising overlapped strap ends the strap and pressed in opposite directions at right angles to the plane of contact of the strap ends into the material of the overlapped strap ends forming transverse crimps therein.

4. A joint for metallic box strapping or the like, comprising overlapping strap ends, a clamping element, normally open along one side before being applied to lapped ends, and adapted to be moved sidewise into position on the overlapped strap ends, and having a plurality of projections adapted to be arranged on opposite faces of the overlapped ends said sleeve being assembled withthe overlapped ends and said forced in opposite directions, bending the metal of the overlapped ends into interlocking crimped relation.

5. The method of joining metallic strap ends in a tensionresisting sealed joint, which consists in overlapping said strap ends, applying thereto an open sided seal having projections extending transversely of thestrap, and subsequently subjecting said seal to heavy pressure so that the pro ections maintaining interlocking crimped oints in overlapped portions of metallic tension reand maintaining said the strap ends the over- Lemon joints under severe tension, comprising a Wire bent into zigzag form and folded so as to receive both strap ends simultaneously into the slot formed by the folding operation and adapted to have its lengths pressed from opposite directions to form interlocking indentations in the overlapped boX strap portions.

7 The method of joining the mutually overlapped ends of tensional box strapping or the like Which consists in applying thereto, a clamping element having projections designed to overlie each face of the overlapped section of the strap, and in thereafter applying heavy pressure to the projections from opposite directions whereby said proections Will form interlock-mg tension resisging deformations in the overlapped strap en s.

8. The method of joining overlapped box strap ends Which consists in applying a sealing element to both overlapped ends simultaneously and in forming mutually interlocking indentations in the overlapped ends through heavy pressure exerted on the sealing element.

In Witness whereof, I hereunto subscribe my name to this specification in the presence of tWo Witnesses.

JEROME EDSON ANDREWS.

Witnesses:

SEBASTIAN HINToN, STANLEY M. Born. 

